Trolley hanger switch



Feb. 16, 1932. F. SCAFF 1,845,195

I TROLLEY HANGER SWITCH Filed March 10, 1931 2 Sheets-Sheet l Inventor A tlomey F. SCAFF TROLLEY HANGER SWITCH Feb. 16, 1932.

2 Sheets-Sheet 2 Filed March 10, 1931 nmlllllll A llorney Patented Feb. 16, 1932 FLOYD SCAFF, or WINQNA, w-Es'r vmenvm Y TnoLnEY HANGnRswITcH Application filed March 10', 1931. Seria1'No. 52 1;5 56.

This invention relates to new and useful improvements in circuit makers and'breakf ers, and more particularly to a switch in combination with a trolley hanger.

The principal object of this inventionisv to provide a trolley hanger switch for mine locomotives, wherein the usual trolley pole will be disconnected from the locomotive mo-.

tor, while the motor will befconnectedto the usual conductor reel, when the trolley 75a bindingpost 2 1'. A-t apoint'ab'ove the ,pivot pin',is.the contact opposite the f'c' ontact 26- on, the upper end of theblock 14. @The contact26 has a binding postl27. The contact'25 has a binding post 28 and the bindpole is resting against the hanger.

Other important objects and advantagesof'i the mvention will be found in the following specification.

In the drawings 1+ Figure 1 represents a side elevational view of a mine locomotive, equipped with the, g

between the rod 14 and thellever 19 to nor- -mally maintain the contacts 21. and 22 enpresent invention. a

Fig. 2 represents a side elevational view .gaged when thetrolley 20 of the novel hanger switch.

Fig. 3 represents a fragmentary detailed sectional view of the switch.

Fig. 4 represents a fragmentary top plan view of the hanger.

Fig. 5 represents an inside elevational view:

of one of the base blocks. t

Fig. 6 represents an inside elevational view of the other base block.

Fig. 7 represents an outside elevational View of the base blocks shown in Fig. 5.

Fig. 8 represents a diagrammatic view disclosing the electrical connection between the electrical devices involved. Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents the track in a mine upon which the locomotive generally referred to by numeral 6 operates.

Numeral 7 represents the usual trolley wire, while numeral 8 represents the trolley pole on the locomotive 6, the same being supported by the stand 9 and provided with a contact pulley 10 at its outer end for riding engage ment with the trolley wire 7 Mounted uponthe locomotive at one end thereof is the usual conductor reel 11 from which the conductor 12 is paid when the end of the trolley wire 7 has been reached in the mine. Referring now in detail to the invention it will be seen that the novel hanger switch laterally disposed extension 31 upon which r the hook 32 is pivotally mounted on, a h0I'1-'.f zontal plane as at 33. The lnner end of the includes thebase block 13, and 14. On the outer side ofthe base block 14 is theplate '15 secured by the'bolts 16 and nuts; 17. This plate- 15 is provided with a pair of flanges '18 '18-between whichfthe lever 19 is rockably mounted on the pin '20. A contact 21on p the lower end of theleVer I19 is opposite the Qcontact22 from the lower 'end of the block 14.

The contact 21 ,is provided with abinding post 23',"while the contact22'isprovided with ing posts 23 and 28 are connected by the jumper 29. A coiled spring 30 is interposed pole 8 has its roller IOengagingthe wire'7. f As canfbe clearly seen in Figs. 2 and 4,*the upper endofthelever 19 is provided with a hook .32 is provided with a lug 34; and the upper {end oftheflever 19 is also provided with a-Tlug35. i

' Interposed between these34 and 35 is'the -89 Icoiled s'pring36, This ,coiledsprin'g serves to maintain the hook 32 substantially alined with the extension 31. However, in the event thehook strikes *againstsomething, it will readily; give, and thus no damage ca-nbe in-"r curred.

As is shown in Fig. 6, the nner side of the block 13 is provided with recesses 3737 for accommodating the posts 24 and 27 while interposed between these recesses 37--37 are the recesses 3838 for accommodating the nuts 1717.- a

. Referring now to the diagrammatic view of Fig. 8 it can be seen that with the trolley pole in use, current flows from-the trolley' wire 7 through the pole 8 through the conductor 39. This conductor 39 is connected 7 to the b-indingpost 24;. Due to the engagement of the contacts 21 and 22, when the pole is disengaged from the hook 32, the current 1159 Will flow through the aforementioned jumper 29 to the conductor 40.

Through the conductor 40, the current flows to the contactor 41 of the controller generally referred to by numeral 42. Connected to the controller 42 is the Wire 43 Which eX- tends to the motor 44 of the locomotive.

As is usual in mines, when the end of the trolley Wire 7 is reached, the trolley pole 8 must be lowered and the reel conductor 12 is clipped to the trolley Wire 7 as at45. Now

With the pole 8 engaging under the hook 32,v

the spring 30 Will be overcome, so that the con tacts 25 and 26 are engaging.

Thus the current flows from the Wire 7 through the conductor 12 to the contact 26 th'ru the contact 25, to the fwireandfob-ff viously throughthis Wire and controller'to A the motor 44.

Vhile the contacts 25 and 26 are engaging,

the contacts 21 and 22 are disengaged, so that I v there is'nocurrent on the conductor 89.

It is thought that the construction and operation as herein given is sufl'icient to permit one skilled in this particular art to readily understand and reproduce the same.

While the foregoing specification sets forth A the invention in specific terms, it is to be unv derstood that numerous changes in the shape, size and materials may be resorted to Without departing from the spirit and scope of the invention as claimed hereinafter.

Having thus described my invention, What I claim as new is i L'A hanger switch comprising a base, a

rockable'lever on the base, a hook onthe lever for engagement With an object, a pair'of'contacts on the lever at opposite sides of the fulcrum point thereof, a pair of contacts on" v the base, opposed to the contacts onthe lever, and spring means interposed'betvveen the lever and the base vfor normally maintaining c the proper position for receiving a trolley.

pole.

one set engaged While the otheris disengaged. 2. A trolley pole hanger comprising an arm, a hook pivotally mounted on the arm, and spring means between the arm and the hook for normally maintaining the hook in In testimony whereof I .aifik my signature.

FLOYD SCAFF. 

